Monumental performance. I wish there were more recordings from this American tour floating out there. I think I only have one other (their show in Chicago at Aragon Ballroom). Portishead at ATP New York in 2011 was taped by acidjack, so maybe he also documented Thought Forms and that might surface at some point just as this awesome video.
In case anyone hasn't seen Thought Forms' Nine Volt Sessions, that's another remarkable video documentation as well:
It seems it hasn't been posted here in this thread yet, but Stu taped them opening for Chelsea Light Moving last year, and the audio can be downloaded from his blog in .MP3 and .FLAC: